Projects A has an expected life of five years. It will cost $80 today. In year 1 it will create a cash inflow of $40. In year 2, it will create a cash inflow of $30. In year 3, it will create a cash inflow of $50. What is the payback period for Project A
a) 2.2
b) 4
c) 3.5
d) 1.3